An illegal immigrant from Mexico allegedly assaulted a U.S. Border Patrol agent during an arrest. He reportedly struck the agent in the face with an object.

A Rio Grande Valley Sector agent attempted to arrest an illegal immigrant near Brownsville, Texas, on Saturday. As the agent began the arrest, the man threw an object at the agent, according to Rio Grande Valley Sector Border Patrol officials.

Officials stated that the object grazed the left side of the agent’s face. The agent continued his attempt to arrest the subject and a struggle ensued. The agent eventually placed the man in custody without further incident, officials said.

During an immigration interview and background investigation, officials identified the man as a Mexican national who entered the U.S. illegally.

Agents referred the case to the U.S. Attorney’s Office for the Southern District of Texas for prosecution on charges of immigration violations and assaulting a federal agent.

Border Patrol agents remain the most assaulted of all federal law enforcement officers